High-Kinetic-Inductance Superconducting Nanowire Resonators for Circuit QED in a Magnetic Field

Journal article (2016)

Authors

Nodar Samkharadze Kavli institute of nanoscience Delft, QuTech Advanced Research Centre, QCD/Vandersypen Lab - QuTech Advanced Research Centre
A. Bruno Kavli institute of nanoscience Delft, QCD/DiCarlo Lab - QuTech Advanced Research Centre , QuTech Advanced Research Centre
P. Scarlino QuTech Advanced Research Centre, Kavli institute of nanoscience Delft, QCD/Vandersypen Lab - QuTech Advanced Research Centre
G. Zheng QuTech Advanced Research Centre, QCD/Vandersypen Lab - QuTech Advanced Research Centre , Kavli institute of nanoscience Delft
David P. Divincenzo Rheinisch-Westfälische Technische Hochschule
L. DiCarlo QuTech Advanced Research Centre, Kavli institute of nanoscience Delft, QCD/DiCarlo Lab - QuTech Advanced Research Centre , QN/DiCarlo Lab - AS
L.M.K. Vandersypen QuTech Advanced Research Centre, QN/Vandersypen Lab - AS , QCD/Vandersypen Lab - QuTech Advanced Research Centre , Kavli institute of nanoscience Delft
Research Group
QCD/Vandersypen Lab (QuTech Advanced Research Centre) (TU Delft)
Copyright: © 2016 Nodar Samkharadze, A. Bruno, P. Scarlino, G. Zheng, D.P. Divincenzo, L. DiCarlo, L.M.K. Vandersypen
DOI: https://doi.org/10.1103/PhysRevApplied.5.044004
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Published Date

07-04-2016

Language

English

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Faculty

QuTech Advanced Research Centre

Department

Quantum Computing Division

Research Group

QCD/Vandersypen Lab

Abstract

We present superconducting microwave-frequency resonators based on NbTiN nanowires. The small cross section of the nanowires minimizes vortex generation, making the resonators resilient to magnetic fields. Measured intrinsic quality factors exceed 2×105 in a 6-T in-plane magnetic field and 3×104 in a 350-mT perpendicular magnetic field. Because of their high characteristic impedance, these resonators are expected to develop zero-point voltage fluctuations one order of magnitude larger than in standard coplanar waveguide resonators. These properties make the nanowire resonators well suited for circuit QED experiments needing strong coupling to quantum systems with small electric dipole moments and requiring a magnetic field, such as electrons in single and double quantum dots.